Gabe amodeo, a nuclear physicist, needs 60 liters of a 40% acid solution. he currently has a 30% and a 60% solution. how many liters of each does he need to make the needed 60 liters of 40% acid solution?

Three friends went on a road trip from phoenix, az, to san diego, ca. mark drove 50 percent of the distance. jason drove 1/8 of the distance. andy drove the remainder of the distance. 1. andy thinks he drove 1/4 of the distance from phoenix, az, to san diego, ca. is andy correct? 2. the distance from phoenix, az, to san diego, ca, is 360 miles. how many miles did each person drive? 3. solve the problem. what is the answer in total?